Automotive air conditioning refrigerant R134a has a way to process

auto air conditioning refrigerant everything refrigerants used environmental protection, we generally choose low pressure filling and static injectors. Process is as follows:

1. From the low voltage refrigeration and air-conditioning and cry when added to 0. 35 - 0. 55 mpa can again observe the air-conditioning refrigeration effect. If can measure high pressure no more than 2. 2Mpa。

2。 When the air conditioning stopped from fluoridated add refrigerant everything. When the system pressure reaches 0. 8 - 0. 9 mpa is appropriate when

3. Make air conditioning refrigeration 30 minutes carefully look at it.

( 1) Measuring pressure measuring low pressure to zero. 35 - 0. 55Mpa。 If high plus much if less and less. High pressure may have more than 2. 2Mpa.

( 2) Listen to the sound if too annoyed noise can also be added fluoride if not sound too little to clarify the amount.

( 3) Measuring temperature suction tube cooler has condensation temperature of exhaust condenser temperature at 80 degrees at about 55 degrees suction tube cold dew in exhaust pipe of the tightening machine is very hot evaporator temperature than the ambient temperature of about 15 degrees.

( 4) Test the work current total current near rated current if current is too large, add more if current is too little and too little. This requires system and circuit under the condition of normal test as a result of the tightening machine operation current and tightening machine has a lot to do with the suction pressure of inspiratory pressure high current is big suction bottom current is small if the system is blocked so tightening machine operating current is bottom and tightening machine noise is not normal.

4。 When filling in the correct way to refill is bound to slow down the air conditioning after add 10 minutes or so to test the pressure and current unavoidably again when time and can not be to time pressure and electric current as a specification that may have been added. Winter, can disconnect the four-way valve coil can also make indoor thermal head reached to open refrigeration refrigeration temperature. Sometimes also can let air conditioning runs under the dehumidification in the form of it is not very tall to the requirement of temperature

a try open air conditioning to normal after a period of time was cold wind blow to the body and can quickly reach the set temperature outdoor tightening function like refrigerators operating moment stopped for an instant that mark is normal. Or it may need everything.

2 measure thermometer was used to measure the temperature difference between the inlet and outlet of indoor machine difference in 8 ℃ above the bigger the temperature difference is normal to clarify the operation situation of air conditioning is good up to about 15 ℃. The difference of less than 8 ℃ may need to add everything refrigerants.

three look at boot after more than ten minutes opened the indoor machine panel should see wear full aluminium on the evaporator tubes on the part of the heat evenly with condensed water so less for normal high air humidity and vice. If half half not is likely to be short of refrigerant. As part of frost or ice is not normal.

4 was made in the use of more than half of users can observe pipe joints and the house the valve if there is a significant sign of the spill. If there are any significant spill phenomenon indicates the machine has leaked fluorine miscibility due to oil leak will fluorine leakage fluorine will leak.

in addition to the above practice discriminant method of professionals present if air conditioning refrigeration effect is not prompt consumers ambitions must please professional after-sale door-to-door for don't to add refrigerant R134a has a blind.

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